HIGH SPEED CMOS TIMER
ADVANCED LINEAR DEVICES, INC.
HIGH SPEED CMOS TIMER
ALD555
GENERAL DESCRIPTION
The ALD555 timer is a high performance...
Description
ADVANCED LINEAR DEVICES, INC.
HIGH SPEED CMOS TIMER
ALD555
GENERAL DESCRIPTION
The ALD555 timer is a high performance monolithic timing circuit built with advanced silicon gate CMOS technology. It offers the benefits of high input impedance, thereby allowing smaller timing capacitors and longer timing cycle; high speed, with typical cycle time of 500ns; low power dissipation for battery operated environment; reduced supply current spikes, allowing smaller and lower cost decoupling capacitors. It is capable of producing accurate time delays and oscillations in both monostable and astable operation. It operates in the one-shot (monostable) mode or 50% duty cycle free running oscillation mode with a single resistor and one capacitor. The inputs and outputs are fully compatible with CMOS, NMOS or TTL logic.
There are three matched internal resistors (approximately 200KΩ each) that set the threshold and trigger levels at two-thirds and onethird respectively of V+ These levels can be ad...
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